Reversing-valve



(N0 Mo el.) I:

E? O E. REVERSING VE.

Patented Mar. 24, 1885.

(g3 fi ATTORNEYS.

UNrrsn STATES PATENT @rrica.

ENOS L. MOORE, or ronrs rourrr, OHIO.

REVERSIN G-VALVE.

SPECIFICATION forming part of Letters Patent No. 314,341, dated March24, 1885.

Application filed April 30, 1884. (No model.)

To ctZZ whom it may concern.-

Be it known that I, ENos L. MOORE, of Portsmouth, in the county ofScioto and State of Ohio, have invented certain new and usefulImprovements in Reversing-Valves for Steam and other Engines, of whichthe following is a full, clear, and exact description.

This invention consists in a reversing cock or vali e dividedlongitudinally into separate compartments with ports in its sides,substantially as hereinafter described, and arranged for operationwithin a suitable case, whereby either valve-portis made to serve as aninlet or outlet, the valve is kept up close to its seat, and by theconstruction of the dividing partition of the valve it may be readilyremoved from its spindle; and it also includes a peculiar valvularconstruction of the spindle of the valve, held up to its seat byspringpressure, and other details in combination with the engine valveor valves, which said reversingvalve serves to control, as herein afterset forth.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 represents a mainly sectional side view of a double-cylinderengine in part with my invention applied, one of the engine-cylinders,with a portion of its steam-chest not being in section. Fig. 2 is apartly broken or sectional plan of the same. Fig. 3 is a longitudinalsection, upon alarger scale, of the reversing-valve, with its casing andattachments shown in Figs. 1 and 2; and Fig. 4 is a transverse sectionof said reversingvalve. Fig. 5 is an end view of a modified constructionof the reversing-valve with other immediate parts suitable for asingle-cylinder engine, also showing a longitudinal section of saidvalve detached.

Referring in the first instance to Figs. 1, 2, 3, and 4. of thedrawings, A A indicate the two cylinders of a double-cylinderpiston-engine, each one of which has the usual ports, I) 1), connectingwith its opposite ends, and controlled by a spool or other suitablevalve, B or B, in the usual or any suitable manner. 0 G are thecylinders of said valves. Arranged midway between these cylinders is thereversing-valve D, which is of cock form or conical shape, but only ofsufficient taper to provide for its being ground to a good fit. As herearranged it is not only midway between the two cylinders, but itslongitudinal axis occupies a transverse relationship to the axes of thecylinders; but it might be differently-arranged relatively to the axesof the cylinders, and, instead of being directly connected with saidcylinders, as here shown, it might be attached thereto by means ofindependent pipes. Said valve, however, as here shown, is fitted to workwithin a case, E, directly connecting the two cylinders O O and forming,with its passage, a single casting. This arrangement serves to brace theengine-cylinders and to make the whole simple and easy of access.

The reversing-valve D is divided longitudinally into two compartments bymeans of a central longitudinal partition, 0, extending throughout thelength of the valve, and terminating in opposite end branches, 0'0 whichradiate, respectively, toward opposite sides of the valve-case, toseparate the live steam from the exhaust. The live steam is introducedby pipe (Z to the larger end of the tapering valve, and serves to holdthe valve to its seat in the case, the exhaust-steam passing off by apipe, d, at the opposite end of the valve-case. To prevent the pressureof the steam from looking the valve and making it hard to operate, thesmaller end of the valve is turned to fit against a shouldered portion,6, of an end cap, F, on the valve-case. The longitudinal rib c of thevalve is made hollow throughout its center, and of square or angularform in its transverse section internally, to form a socket which isclosed on the steam-inlet end of the valve for the purpose of receivinga correspondingly-shaped spindle, G, by which the valve is operated.This spindle is not secured to the valve, so that whenever it isnecessary to remove the valve it is only requisite to remove a cap, F,on the steam-inlet or larger end of the valve-case, when the cock orvalve is free to be taken out. The sides of the valve have oppositeports,f f, in them, as more clearly shown in Fig. 4, and which may be ofany desired width, but each of which is here shown as occupyingone-fourth of the circumference of the valve. The one of these portsserves to pass steam to and the other to exhaust steam from theenginecylinder valves too" B B by means of passages g g in the case E,and connecting with the cylinders O either passage 9 or serving forpassage of the live steam and the other for the exhaust, accordingly asthe valve is shifted or turned to reverse the engine. Thus thesteam-passage g org for the live steam for one direction in the motionof the engine becomes the exhaustpassage in an opposite-moving directionof 10 the engine, and vice versa. WVhen required to stop the motion ofthe engine, then the portion of the sides of the valve D between itsportsff are adjusted by the turning of the valve to close communicationwith the pas- I 5 sages g g. One-half of the bearing-surface of saidvalve D, excepting near and at its ends, may be cut away. The valve isturned to reverse the engine by means of a hand-lever, H, on the spindleG, and, by using wide valve-ports, said lever will not require to travelthrough the same length of are as if the ports were narrower. Again, theconstruction of the valve D is such that it cannot be placed afterremoval in a wrong position to work.

The valve-spindle G has a collar, 71, on its outer end portion, turnedand constructed to form a valve that sits on or against a seat, 2', inthe cap F, and is kept closed thereon, to

prevent leakage of exhaust-steam, either by a spiral spring arrangedaround the spindle, between the end of the valve and said collar, or bymaking the reversing-lever H a spring one, so that when engaged with anyone of a series of three notches, 7c, in an are, I, over or" againstwhich said lever moves, and with either one of which notches it isengaged accordingly as the valve is reversed or adjusted into a shut-offposition, said lever by its ten- 0 sion will operate to hold thevalve-collar h of the spindle up to its seat 2; and as the valve issubjected to no pressure having a tendency to move it from its set-position, the margins of the notches in may be rounded off to facili- 5tate the engagement and disengagement of the lever, and a thin steelreversinglever will suffice, whereby the engine may be controlled from adistance by means of a rope, cord, or wire connected with thereversing-lever, which will be found especially advantageous when theengine is applied to work an elevator.

The modification represented in Fig. 5 is designed for single-cylinderengines, and shows a generally siinilarly-constructed reversing valve D,to which (I is the steam-inlet and d the exhaust-outlet from the case,and B is the engine-valve, but with the ports running through saidreversing-valve, which may be held to its place by a nut at its smallerend, and be operated by a square spindle fitting a socket in its largerend.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1-. The reversing cocklike valve D, of tapering construction indirection of its length, and divided longitudinally by a hollowpartition into separate compartments, with ports in its sides arrangedfor operation in connection with fixed ports or passages in its case, asdescribed, and whereby either passage of the valve-case is made to serveas an 7 inlet or as an outlet accordingly as the valve is reversed,substantially as specified.

2. The reversing-valve D, of circular tapering form, dividedlongitudinally by a hollow partition, 0, having opposite end branches, 00", 011 reverse sides, respectively, of the axial line of the valve,into inlet and exhaust compartments provided with exterior side ports,ff, in combination with an inclosingcase having inlet and outletpassages g g, for operation substantially as described.

3. The circular tapering reversing-valve D, divided longitudinally intoopposite compartments,open, respectively,at reverse ends ofthe valve onopposite sides of it, and having side ports, ff, and with thelongitudinal portion 0 of its partition constructed to form a square orangular'socket for reception of the spindle by which the valve is turnedor operated, es-

sentially as specified.

4. The loosely-fitting valve-spindle G, constructed with a valvularcollar, h, held up to or against its seat by spring'pressure, asdescribed, in combination with the cock-like reversing-valve D,dividedinto opposite openended compartments, as specified, and havingthelongitudinal portion 0 of its partition constructed to form asocketclosed at its one end and of angular construction transversely forengagement with said spindle, and the case E, within which said "alveworks, and its caps F F, substantially as described.

5. The combination, with the valve-casing E, caps F F, the notched areI, and the valve D, provided with the hollow partition 0, of the stem G,provided with the collar h, and the spring-lever H, substantially asherein shown and described.

6. The combination, with the valve D, provided with the socketedpartition 0, and the stem G, of the casing E, provided with the caps FF, substantially as herein shown and described, whereby provision ismade for re moving the valve without removing its stem, as set forth.

EN OS L. MOORE.

\Vi tn esses:

VT. 0. HAMMILL, JNO. M. MOORE.

ICC

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